Power-shovel.



S. M. BSHGP.

POWER, SHOVEL. y APMICAHOH mmm MAY m, 1911.

LlOSATU maimed July 1mm A s M. BISHO?.

POWER SHOVEL. APPLICATION FILED MAY 19, 1911.

Patented July 14;, 1914.

3 SHEETS-SHEET 2.

UHUEEEEE S. M. BISHQP.

POWER SHOVBL. APPLIGATIQN FILED MAY 19, 1911..

Patented July 14,3914

en e nrw ,i .liest ein inne" e 'i ein 'y roteren-s Apnlcotion n'lerKiley Ml, tolli. Serial fiato, 622512, f

specificati@ of Letters @aten-t.

. fully te, this.

10 ail ywhom may concern:

Be it known that l, S'ronns M.- Bisi-tor, a citizen of the United Statesof america, residing at the city of`Schenectady, in the eounty ofSchenectady and State of New York, have invented certain new and usefulimprovements in Power-Shovels, of which 4the following is aspecification. v

My invention relates to power shovels, and the object ot ,my inventionis to provide a means for mounting a shovel in connecti on With acarriage adapted to ride along; a boom under the influencel oi anwengineor counterweights, il desired; together 'with such elements andcombinitionsvas are here inafter more particularly set forth andclaimed. l accomplish these objects by means of themechanism,illustrated in the accon'ipanying,` drawings, in which:

Figure 1 is a side elevation. Fig. 2 is a cross section of the carriageand boom along ,the lines X-X on Fig. Fly, 3 is a section through thecarriage and boom along' the lines Y-Y on Fig'. 2. Fig. l is a sideelevation of a niodilied form.

Similar letters refer to throughout the several views.

A, is a suitable mast or other support, and B is a boom suitably mountedat C, the hoornV beingcapable of .a rotary 'motion around C, as a pivotunder the direction of' the rope or cable, D, which passes over thesheaves, E, in the block, F, attached to the head of the mast, A, andover the sheave, g, in the block, G, attached to the head o'lithe boom,B; also secured preferably at one end to "the block, G. lt also passesover the sheave, H, near the head oi the mast, A, 'from whence the ropepasses to the engine or device used .for raising the boom, not shown.

The rope or cable, J, is secured to the block, l, attached to theshovel, L, and also passes over the sheave, 7.1, in ihebloch, l,

similar parts the sheave, wi, in the block, M, attached to;

the head of the boom, l, posses o-verthe sheav'e, N, inthe boom, B, andthe sheave, G, on the side ol the ninst, A., and passes to the apparatusused for operating saine, not shown.

l do not claim any invention in the man nerof connecting-up the mast,boom and sheaves so far as already referred to and l therefore have,given but an outline riesci-in tion of the cables and their connectionswith the boom, mast end sheaves.

the upper edge with the flange, o, and along i the lower edge with theiienge, o', cortesponding to the tianges, t, t', on the plate, T. Theflanges, o, and t, form supports for the rollers, l. and ons thecarriage, S, and the flanges, n', and t, are engaged by the rollers, Sand et, on the cairiatg#A as shown in f The carriage, Si, comprises twopaellel plates, 5, 6, through which the rod, R carryingl the rollers, l,2, and the rod, 8,carrying the rollers, 3, il, pi ss. They are heldtogether ily suitable tie rod, 9, and plate, l0,

the tie rods beine" securedby suitable nut,

n, screwing onto the threaded end, U, of the tie'rod, Q. The plate, l0,is secured by bolts,

l1, passing through the flanges, l2, on the plate, l0, and also throughthe plates, 5, 6, respectively. Between the plates, 5, 6, ll place themovable plates, i3, l-l, carrying a series oli U'sshaped staples,15,1;l'1roug`l1 which the cable, 1G, pass-es and by which it is held inposition.' ',llhrough the plate, l0, l place e. series oi bolts, il',which extend trom the plate, ll, through the plate, 13, and through theplate, lei, and are held in position by means 0I" the nuts, lS. @n thebolts, 17, I place the spiral springs, if), resting one end against theplate, 13, and the other end against the plate, l0. Between the plates,153,14, l .place the elliptical springs, 20, one spring preferably ateach side olthe plates as shown in 2. To the under side ot' the plate,13, as the plate is mounted, l place a series of concave blocks 211,adapted 'to engage the top of the cable, 1G, when held by the til-shapedstaples, A

Between the pistes, 5, o, and beneath the v plate, le, mounted -on osuitable holt, 9, l

pivot the end of the clipper 211110,23. The end ot the clipper arm, 23,is formed in an irregular curve, 24:, having one side, S35, oli theclipper arm higher than 'the side, 26, :making a cani-shaped formationupon that pere-ot the end o3? the flipper erm which engeges the plate,le, es shown in 8.

the clipper is preferably T" te end oz.,

ite

` in the fitting IV, as shown in Fig. 1.

l it has been dumped.

provided with ya metal shoe, 27,' held i in place by suitable bolts, 28,as shown in Fig. 3

.' l The shovel, L, is secured by suitable links,

p, p, to thesleeved fitting, W, at the end of the dipper arm, 23, beingadjusted by means of bolts, w, passing through the links, p, fo, intoone of the openings, W', In preferably place the heel'of the shovel, L,I

30, hinged at 31, near the top of the a door,

shovel, holding the door closed by means ol t a suitable pin, 32, whichextends throuffh the collars, 33, on the door and into a suitableopening in thesbottom of the shovel` 'or Ithrough a catch plate, 34,attached thereto las shown in Fig. 1. The cable, 35, connected with thepin, 32, may be attached to one arm, 36,- of the bell crank-lever, 37,secured to the clipper arm, 23, 0r to the shoe, 27, attached thereto.Thev other arm, 38, on the bell crank lever is adapted to engao'e .withthe tripping arm, 39 attached to the The carriage is'connected up to'cause it to rec1procate along the boom and has at- Vthe operation ofraising the shovel.

tached to each end thereof, at 50 and 51, the opposite ends of thecable, 44. The cable,

44, passes over the pulley, 42, on the shaft,

43, near the/ end of the boom and also over drum, 46, and sheave, 4,5,near the other end of the boom. This arrangement. permits tl'iecarriagcto move away from the mast toward the free end of the boom during Toreturn the carriage after the shovel is dumped I attach a cable, 52, tothe carriage at 53, pass the cable, 52,v over the sheaves, 45, and 54,and secure a Weight, 47, to the loose end ot the cz1ble,wvhich Weight issutiicient to return the carriage to its operative position after theshovehhas been dumped.

I show in Fig. 4 Ia modified form of the means for moving the carriage.The cable, 44, is passed several Itimes around the drum, 46,. for thepurpose of making a gri means of the cable, 75, passing over the drum,4G, und over the drum, 76, of the hoisting engine, 77. The hoistingengine, 77, may be constructed 'in any suitable manner.

The operation of my invention is'as follows :The shovel is directed vinthe usual manner with its toe pointing into the dirt.

Power is applied to the cable, J, which is transmitted through thecable, J, to the for ward part of the shovel and the shovel be- I ginsto rise. lVhile the shovel isl in the ground and in the position forfilling, the

end of the dipper arm, 23, is in engagement,

with the movable plate, 14, causing the cable, 16, to be gripped between4the plates,

13 and 14, and the carriage is prevented from moving on the boom. When,however, the shovel is raised by the cable, J, the end of the dipper armis moved so that because of the cam-shaped contour thereof the grip onthe cable, 16, is released,`.permit ting the carriage to move toward theend of the boom. In order to return the carriage after it isdumped, Ioperate the power j 46, which by'means ofthe engine drum,- connectedtherewith moves' the carriage toward the mast. I may substitute for theengine the counter weight and attachmenthereinbefore described.

It is understood that the cable, 16, is

secured ateachten'd to the boom, B. V

to secure lby Letters Patent,`i`s:

boom, a carriage mounted to travel thereon, a dipper arm hung on thecarriage, a bucket carried r'by said arm, means for actuating said arm,and means on the carriage controlled by the movement of said arm toautomatically discharge the lcontents of the bucket.

2.' In an excavator, the combination of a What I claim as my inventionand desire boom, a carriage mounted to travelthereon, a dlpper arm hungon lthe carriage,

a bucket carried by said arin, means for actuating said arm, meanscontrolled by said arm to automatically loch the earria 4e to the boom,and means controlled by tye movement 'of said arm to automatically disncharge the contents of the bucket.

3. In an' excavator, the combination` of a boom, a carriage mounted totravel thereon, a flipper arm hung on thel carriage,

los

a bucket carried by said arm, means for. ac-

t-uating said arm, a closure for the bucket,

a trip, a connection between said trip and said closure, and a stop onthe carriage'in" the path of the trip whereby thetripwill dipper arm israised. In testimony whereof I have :it: my signature in presence 4of'tvvo witnesses. y STORRS MLBISHGP. Witnesses: i 'y FREDERICK W.'CAMERON, V p

pY 'be actuated to release the closure "as the -thereon.l The drum, 46is .operated by

